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1、NuclearEngineeringandDesign240(2010)672–677ContentslistsavailableatScienceDirectNuclearEngineeringandDesignjournalhomepage:www.elsevier.com/locate/nucengdesAssessmentofRELAP5pointkineticmodelagainstreactivityinsertiontransientintheIAEA10MWMTRresearchreactorT.Hamido
2、uchea,∗,A.Bousbia-Salahb,1aDivisiondel’Environnement,delaSûretéetdesDéchetsRadioactifs,CentredeRechercheNucléaired’Alger,02BoulevardFrantzFanon,BP399AlgerRP,AlgeriabDIMNP-UniversityofPisa,ViaDiotisalvi02,56126Pisa,ItalyarticleinfoabstractArticlehistory:Thecurrentst
3、udyemphasizesanaspectrelatedtotheassessmentofamodelembeddedinacomputerReceived14April2009code.ThestudyconcernsmoreparticularlythepointneutronkineticsmodeloftheRELAP5/Mod3codeReceivedinrevisedform5November2009whichisworldwideused.Themodelisassessedagainstpositiverea
4、ctivityinsertiontransienttakingintoAccepted5November2009accountcalculationsinvolvingthermal-hydraulicfeedbackaswellastransientswithnofeedbackeffects.ItwasconcludedthattheRELAP5pointkineticsmodelprovidesunphysicalpowerevolutiontrendsdueThisworkisdedicatedtothememory
5、ofDrmostprobablytoabugduringtheprogrammingprocess.A.BahafromtheNuclearResearchcentreof©2009ElsevierB.V.Allrightsreserved.Birine,Algeria.1.Introductionsonsofsuchunexpectedtrends.ForthispurposefastandslowpositivereactivityinsertioninanMTRnuclearresearchreactorRELAP5/
6、Mod3isabestestimatethermal-hydraulicsys-coreareconsidered(IAEA-TECDOC-643,1992).Theresultsarethentemcomputercodedevelopedmainlyforaccidentanalysiscomparedwithachannelcode,namelyRETRAC-PCcode(Bousbia-wherethermal-hydraulicphenomenaarepredominant(RELAP5SalahandHamido
7、uche,2005),whichembedsimilarphysicalDevelopmentTeam,1995).Sofarthepointkineticmodelembed-andnumericalpointkineticmodelasRELAP5/Mod3systemdedinthecodewasnotextensivelyusedorvalidatedduetothecode.following:•Generallythereactorpowerisimposedwhenthermal-hydraulic2.Poin
8、tkineticmodelvalidationmatrixtestsareconsidered.•Formostofthelicensingtransients,onlythedecayheatcurveis2.1.TheRETRAC-PCnumericalmodelneeded.•Inr
